#173A42#173A42

#173A42 is a dark, muted cyan. Relative luminance 0.036; OKLCH L 32.6% C 0.042 H 214.9°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#173A42
RGB	rgb(23, 58, 66)
HSL	hsl(191, 48%, 17%)
HSV	hsv(191, 65%, 26%)
CMYK	cmyk(65.2%, 12.1%, 0%, 74.1%)
CIE-LAB	lab(22.31, -9.79, -8.76)
CIE-LCH	lch(22.31, 13.14, 221.83°)
OKLab	oklab(32.64% -0.0349 -0.0243)
OKLCH	oklch(32.64% 0.042 214.9)
XYZ	xyz(2.8494, 3.6013, 5.6982)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A42 #421F17

analogous

#174235 #173A42 #172442

triadic

#173A42 #42173A #3A4217

tetradic

#173A42 #351742 #421F17 #244217

square

#173A42 #351742 #421F17 #244217

split-complementary

#173A42 #421724 #423517

monochromatic

#081417 #081417 #173A42 #27626F #378A9D

Accessibility & contrast

On white

12.21

#173A42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#173A42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A42

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A42	#FFFFFF	#000000	##FFFFFF
##173A42	1.00	12.21	1.72	12.21
#FFFFFF	12.21	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343842

Deuteranopia (green-blind)

#2E3342

Tritanopia (blue-blind)

#003D3C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173a42;
/* rgb */ color: rgb(23, 58, 66);
/* oklch */ color: oklch(32.6% 0.042 214.9);

Tailwind

colors: {
  custom: {
    50: '#597076',
    500: '#173a42',
    950: '#000000',
  },
}

SCSS

$custom: #173a42;
$custom-light: #597076;
$custom-dark: #000000;

JSON

{
  "hex": "#173a42",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 66
  },
  "hsl": {
    "h": 191.163,
    "s": 48.315,
    "l": 17.451
  },
  "oklch": {
    "l": 0.32639,
    "c": 0.04249,
    "h": 214.9
  },
  "luminance": 0.03602
}

Semantic roles & 50–950 ramp

primary

#173A42

secondary

#79473C

accent

#6950D8

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #173A42

Body copy rendered with the generated semantic roles for this colour.

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